/*
    This file is part of the iText (R) project.
    Copyright (c) 1998-2022 iText Group NV
    Authors: iText Software.

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License version 3
    as published by the Free Software Foundation with the addition of the
    following permission added to Section 15 as permitted in Section 7(a):
    FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY
    ITEXT GROUP. ITEXT GROUP DISCLAIMS THE WARRANTY OF NON INFRINGEMENT
    OF THIRD PARTY RIGHTS
    
    This program is distributed in the hope that it will be useful, but
    WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
    or FITNESS FOR A PARTICULAR PURPOSE.
    See the GNU Affero General Public License for more details.
    You should have received a copy of the GNU Affero General Public License
    along with this program; if not, see http://www.gnu.org/licenses or write to
    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
    Boston, MA, 02110-1301 USA, or download the license from the following URL:
    http://itextpdf.com/terms-of-use/
    
    The interactive user interfaces in modified source and object code versions
    of this program must display Appropriate Legal Notices, as required under
    Section 5 of the GNU Affero General Public License.
    
    In accordance with Section 7(b) of the GNU Affero General Public License,
    a covered work must retain the producer line in every PDF that is created
    or manipulated using iText.
    
    You can be released from the requirements of the license by purchasing
    a commercial license. Buying such a license is mandatory as soon as you
    develop commercial activities involving the iText software without
    disclosing the source code of your own applications.
    These activities include: offering paid services to customers as an ASP,
    serving PDFs on the fly in a web application, shipping iText with a closed
    source product.
    
    For more information, please contact iText Software Corp. at this
    address: sales@itextpdf.com
 */
using System;
using System.Collections.Generic;
using System.Text;

namespace iTextSharp.text.pdf.parser {

    /**
     * Contains information relating to painting current path.
     *
     * @since 5.5.6
     */
    public class PathPaintingRenderInfo {

        /**
         * The nonzero winding number rule determines whether a given point is inside a path by
         * conceptually drawing a ray from that point to infinity in any direction and then examining
         * the places where a segment of the path crosses the ray. Starting with a count of 0, the rule
         * adds 1 each time a path segment crosses the ray from left to right and subtracts 1 each time a
         * segment crosses from right to left. After counting all the crossings, if the result is 0, the
         * point is outside the path; otherwise, it is inside.
         *
         * For more details see PDF spec.
         */
        public const int NONZERO_WINDING_RULE = 1;

        /**
         * The even-odd rule determines whether a point is inside a path by drawing a ray from that point in
         * any direction and simply counting the number of path segments that cross the ray, regardless of
         * direction. If this number is odd, the point is inside; if even, the point is outside.
         *
         * For more details see PDF spec.
         */
        public const int EVEN_ODD_RULE = 2;

        /**
         * End the path object without filling or stroking it. This operator shall be a path-painting no-op,
         * used primarily for the side effect of changing the current clipping path
         */
        public const int NO_OP = 0;

        /**
         * Value specifying stroke operation to perform on the current path.
         */
        public const int STROKE = 1;

        /**
         * Value specifying fill operation to perform on the current path. When the fill operation
         * is performed it should use either nonzero winding or even-odd rule.
         */
        public const int FILL = 2;

        private int operation;
        private int rule;
        private GraphicsState gs;

        /**
         * @param operation One of the possible combinations of {@link #STROKE} and {@link #FILL} values or {@link #NO_OP}
         * @param rule      Either {@link #NONZERO_WINDING_RULE} or {@link #EVEN_ODD_RULE}.
         * @param gs        The graphics state.
         */
        public PathPaintingRenderInfo(int operation, int rule, GraphicsState gs) {
            this.operation = operation;
            this.rule = rule;
            this.gs = gs;
        }

        /**
         * If the operation is {@link #NO_OP} then the rule is ignored,
         * otherwise {@link #NONZERO_WINDING_RULE} is used by default.
         *
         * See {@link #PathPaintingRenderInfo(int, int, GraphicsState)}
         */
        public PathPaintingRenderInfo(int operation, GraphicsState gs) : this(operation, NONZERO_WINDING_RULE, gs) {
        }

        /**
         * @return <CODE>int</CODE> value which is either {@link #NO_OP} or one of possible
         * combinations of {@link #STROKE} and {@link #FILL}
         */
        public virtual int Operation {
            get { return operation; }
        }

        /**
         * @return Either {@link #NONZERO_WINDING_RULE} or {@link #EVEN_ODD_RULE}.
         */
        public virtual int Rule {
            get { return rule; }
        }

        /**
         * @return Current transformation matrix.
         */
        public virtual Matrix Ctm {
            get { return gs.ctm; }
        }

        public virtual float LineWidth {
            get { return gs.LineWidth; }
        }

        public virtual int LineCapStyle {
            get { return gs.LineCapStyle; }
        }

        public virtual int LineJoinStyle {
            get { return gs.LineJoinStyle; }
        }

        public virtual float MiterLimit {
            get { return gs.MiterLimit; }
        }

        public virtual LineDashPattern LineDashPattern {
            get { return gs.GetLineDashPattern(); }
        }
    }
}
